Mahjong

Mahjong runs straight in the browser. It is filed under Puzzle, and it loads on the page you are reading. It is built for touch, so a phone or a tablet is the natural place for it. Listed under best, board, brain, casual, games.

It is drawn for a tall screen, so it fills a phone held upright rather than a wide monitor. Nothing is saved to an account, because there is no account — progress lives in this browser.